RESUMO
@# Objective To evaluate the risk of hepatitis B virus(HBV) infection among preschool children who were the non-responders to hepatitis B vaccine in future. Methods A prospective cohort study was conducted. Children aged 2 to 5 years were selected from 64 kindergartens.These children were inoculated three doses of hepatitis b vaccine at 0, 1 and 6 months after birth. Hepatitis B surface antigen (HBsAg)and Hepatitis B surface antibody (anti-HBs)were detected during the period from March to May 2015. The children who were HBsAg negative were enrolled in the study. The subjects were divided into exposure group (anti-HBs negative) and control group (anti-HBs positive) . The follow-up began on June 1, 2015 and ended on June 1, 2016. Serum HBsAg of children in the cohort was then collected and detected from June 1 to 30, 2016. At the end of the study, the HBsAg positive rates between two groups were compared. Results 83 children who received hepatitis B vaccine again during the follow-up period were excluded from 1 907 non-responders. The actual number in non-responders group was 1 824. 151 children were lost at the end of the study. The actual number of follow-up was 1 673 and 5 children were found to be positive for HBsAg and the infection rate was 0.30% (5/1673). In the respondent goup, 2 054 were enrolled and followed. Finally, 140 children were lost and none of the remaining 1 914 people were HBsAg positive at the end of the study. HBsAg positive rate was higher in the non-responder group than in the responder group (P=0.023). Conclusion There is a risk of HBV infection in the children who are non-responders to hepatitis B vaccine in future.
RESUMO
HBsAg, HBcAb and HBsAb were examined with radio-immunoassay in 265 patients with glomerular disease, who were admitted to wards or visited to outpatient clinics of department of pediatrics, Seoul National University Hospital, from Jan., 78 to Oct. 80, and in 576 control group, with other than liver disease and without history of transfusion. The incidence in glomerular disease was 10.2%(27 of 265 patients)-nephrotic syndrome 9.2%(12 of 130); acute glomerulonephritis 7.3%(5 of 68), recurrent hematuria 7.7%(2 of 26), H-S nephritis 25%(3 of 12), chronic renal failure 21%(3 of 14), and the others 13.3%(2 of 15), while the incidence of HBs antigenemia in control group was 5.03%(29 of 576 patients)-male 5.5%(21 of 362), female 4.2%(8 of 214). The overall incidence of HBs antigenemia in renal disease was statistically higher than that of control group(p<0.05), though the respective incidences of the above each renal disease group were somewhat higher than that of control group, however they were not statistically significant, The incidence of positive rate of HBsAb and/or HBcAb in control group was 26.7%(56 of 209), and that in renal disease was 23%(18 of 578).